The electric lifting displacement platform is a precision measurement machine that can be used in various industries by converting the rotation process of the motor into linear motion, thereby completing high-precision work. Electric lifting displacement platforms are increasingly widely used in scientific experiments, laser processing, automatic detection, automatic measurement, automatic control and other fields. And achieve displacement control in environments such as vacuum, pollution, sterility, and radiation.
The electric lifting displacement platform system usually consists of three parts: displacement platform, driving motor, and controller. The driving motor and controller mainly determine performance parameters such as driving torque, acceleration and deceleration, signal processing, and usage functions (such as scanning and arc interpolation). With the improvement of motor control technology, in addition to the mechanical components of the electric moving platform, the motor and controller also greatly affect the vibration, noise, and positioning accuracy of the electric moving platform.
As the core of the entire displacement system, the displacement platform determines the main technical indicators of the system, such as displacement accuracy, stroke, straightness, load, stability, adaptability to the environment, and external dimensions. Due to the relatively complex nature of the electric displacement platform system, which often involves various aspects such as mechanical design, electronic technology, control level, processing capacity, assembly process, etc., although electric displacement platform products are widely used, the various indicators of electric displacement platforms are currently deeply confused and misunderstood in China. The most important and easily confused technical indicator is the accuracy of electric displacement platforms.
The quality of the electric lifting displacement platform depends on the quality of key components, including screws, guide rails, and motors. The material and processing accuracy of the body, as well as the level of overall assembly and adjustment technology, also have a significant impact on the quality of the electric lifting displacement platform.
The screw plays a driving role in the electric displacement platform and determines the positioning accuracy, repeated positioning accuracy, axial clearance, speed, resolution and other indicators of the electric displacement platform. Generally, ball screws, grinding screws, and trapezoidal screws are used. The ball screw and nut achieve rolling transmission through steel balls. By selecting the diameter of the steel ball or using double nut preloading, axial clearance can be reduced and rigidity can be improved. Therefore, it has great advantages in transmission accuracy, transmission efficiency, rigidity, and service life. The sliding transmission between the screw and nut of the grinding screw and trapezoidal screw leads to low transmission efficiency, slow speed, and difficulty in eliminating axial clearance. The grinding screw can use small guide rails to improve system resolution, and its manufacturing cost is low. The trapezoidal screw has a large transmission torque and can achieve self-locking, making it a significant advantage for Z-axis use.
PDV provides optical experimental displacement platforms, multi axis displacement platforms, and more precise fine-tuning capabilities. Each type of product is divided into multiple series based on differences in main material, guide rail form, structural characteristics, driving methods, etc.
